N-, mag-
To joke with s.o. [mag-]; to act in a silly playful manner (as kittens, puppies [mag-]); to kid or tease s.o. [N-]; to make fun of s.o. [pag--an].
The pag--an imp. focuses on the thing that is being joked about.
When you joke together, just don't get angry with each other.
Don't tease your companion if you can't take being teased.
Why are you always making fun of my friend?